215 



far on into South Australia, the outcropping strata consist of the 

 same, or still younger, rocks, 



A list of the fossils collected is given in the appendix. With 

 few exceptions, they are identical with those from jMuddy Creek 

 (lower bed). On the Geological Map of Victoria, the blue clays 

 are marked as Oligocene (Eocene), and bracketed with the 

 Mornington beds, which they closely resemble. 



4. BuLLEX Merri and 'Gxotuk Lakes. 



In the volcanic country around Camperdown these lakes form 

 prominent and very interesting features. They are situated in 

 a deep hollow, with steep banks leading down to the water's 

 edge. A narrow ridge, not more than 20 feet at the lowest part 

 above the surface of Bullen Merri, though very much more than 

 that above Gnotuk, separates the two lakes. 



Both on the shores, and for some distance up the banks of 

 Lake Bullen Merri, the only one we visited, fossil shells are 

 fairly plentiful. When we were there the supply was more 

 limited than usual, as one of our j)arty had picked up all he 

 could find a few days before. However, as he submitted them to 

 our inspection shortly afterwards, Ave decided to forgive him. 

 We are indebted to the same gentleman for a collection of shells 

 from Gnotuk. From the latter only 39 species were obtained, 

 but from Bullin Merri the number recorded is 104. Of the 

 Gnotuk species, 14 are absent from the Bullin Merri gatherings, 

 so that the actual total amounts to 116. By reference to the 

 tabulated list of species appended, it will be seen that the deposit 

 belongs to the Muddy Creek (louver beds) and Gellibrand types. 

 Its elevation is — for Gnotuk 391 feet, and for Bullin Merri 531 

 feet above sea-level, the surface of the water being in the latter 

 lake 140 feet above that in the former. For information con- 

 cerning levels in the two lakes we have to thank Mr. King, the 

 Engineer of the Shire of Hampden. 



5. Warrxambool. 



The recent dune-limestone is the prevailing rock at Warrnam- 

 bool, and though tertiary strata were known to exist, it is only 

 lately that fossils have been obtained. The credit of finding 

 them belongs to Mr. A. D. Dobson, a late arrival in the town, 

 and it is remarkable that they escaped observation so long. The 

 fossiliferous sections commence close to the mouth of the 

 Hopkins, and continue for a few miles up the river. The rocks 

 consist of the well-known rugged limestones, in which the fossils, 

 principally casts, are with difficulty extracted whole. Overlying 

 them is the ieolian limestone just mentioned, rough and jagged, 

 like the fossil-bearing strata iDeneath, but easily distinguishable 



